Unit Test — Unit test Answers
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What are possible units for impulse? Check all that apply.kg • mkg • N • sN • m
A
kg • mB
kg •C
N • sD
N • mE
StartFraction Newtons times meters per second EndFraction
23
A 0.25 kg baseball is in contact with a bat for 0.0075 s and exerts a force of 18,500 N. What impulse is delivered to the ball?
A
33 kg •B
140 kg •C
4600 kg •D
74,000 kg •24
Which are examples of perfectly inelastic collisions? Check all that apply.
A
a baseball bouncing off a batB
bumper cars bumping off of each otherC
a cue ball hitting an eight ball and stoppingD
a plane landing on an aircraft carrierE
rain sticking to a windowF
two train cars coupling together25
What is the SI unit for momentum?
A
kg • mB
kg •C
kg •
D
kg •
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